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Why use String.Format? [duplicate]
...of + operators all specified in a single expression it will be converted, by the compiler, into a single call to string.Concat, and there will not be any intermediate strings created. Using a StringBuilder would in fact hurt performance, not help it, since Concat can create an internal buffer of e...
Securing my REST API with OAuth while still allowing authentication via third party OAuth providers
...n authentication and authorization:
A user authenticates to your web site by supplying some credential such as a username+password. OpenID allows this to be displaced by having the user authenticate to another service, which then asserts the user's identity to your web site on the user's behalf. ...
Asynctask vs Thread in android
...perform some background work, I used a separate Thread . But as suggested by others, I am now using AsyncTask .
5 Answers...
Strip whitespace from jsp output
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The trimDirectiveWhitespaces is only supported by servlet containers that support JSP 2.1 and after, or in the case or Tomcat, Tomcat 6 (and some versions e.g. Tomcat 6.0.10 don't implement it properly - don't know about the others), there's more information about trimDir...
What is the purpose of flush() in Java streams?
...flush method:
Flushes the output stream and forces any buffered output bytes to be written out. The general contract of flush is that calling it is an indication that, if any bytes previously written have been buffered by the implementation of the output stream, such bytes should immediately be ...
Does the JVM prevent tail call optimizations?
...irements could in theory be supported, but it would probably require a new bytecode (see John Rose's informal proposal).
There is also more discussion in Sun bug #4726340, where the evaluation (from 2002) ends:
I believe this could be done nonetheless, but it is not a small task.
Currently, t...
How do I disable orientation change on Android?
...answered the question and it really isn't a good idea now. See this answer by hackbod for reasons:
Avoid reloading activity with asynctask on orientation change in android
Add android:configChanges="keyboardHidden|orientation" to your AndroidManifest.xml. This tells the system what configuration ...
Java8 Lambdas vs Anonymous classes
... state in fields, and this state is accessible to (and potentially mutable by) any method of the class. This state exists until the object is GC'd, i.e., it has indefinite extent, so it can persist across method calls. The only state with indefinite extent lambdas have is captured at the time the la...
Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile
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I deleted by repository/org directory and it all worked fine after that
– dannrob
Jul 28 '14 at 17:09
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Android Spanned, SpannedString, Spannable, SpannableString and CharSequence
...s the most commonly-used concrete implementation of CharSequence, followed by StringBuilder.
Spanned is a CharSequence with "spans" indicating formatting to apply to portions of the text, where those spans cannot be modified.
Spannable is a Spanned, adding in the ability to modify the spans (to ad...